Law Governing Loss of Weight in Starving Cassiopea. 



75 



Table 17 shows the decline in weight of three normal specimens of Cassi- 

 opea xamachana starved for 20 days at Tortugas, Florida, in filtered sea- 

 water. One medusa (A) was maintained in 

 water which had been heated to yi*' C. and 

 then cooled to normal temperatures. Another 

 {B) was kept in sea-water from which most 

 of the dissolved air had been exhausted by 

 means of an air pump. The third medusa 

 ^qa q X (O was kept in normal filtered sea-water. 



8 10 IZ 14 16 



Diagram illustrating Table 17. 



ZO 



Table 18 shows the decline in weight of three half disks of Cassiopea 

 xamachana each starved in 6 liters of water in diffuse daylight, together with 



Table 18. 



•According to formula y = 23(1 — 0.06)*. 

 'According to formula y = 20(1 — 0.06)*. 

 ' According to formula y = 18.5(1 — 0.063)*. 



